EP 0924826 B1 20060726 - Switching device for a generator in a power plant and a transformer with a three-position circuit breaker
Title (en)
Switching device for a generator in a power plant and a transformer with a three-position circuit breaker
Title (de)
Schaltvorrichtung für den Generator einer Kraftwerkanlage und einen Transformator mit einem Dreistellungsschalter
Title (fr)
Dispositif de commutation d'un générateur de centrale électrique et d'un transformateur avec un sectionneur à trois positions
Publication
Application
Priority
FR 9714709 A 19971124
Abstract (en)
[origin: FR2771561A1] The by-pass circuit, comprising an auxiliary transformer (8), circuit breaker (7) and variable frequency static converter (6), derives a supply from the grid transformer (5) which it applies to the generator (1), in motor configuration, to start the turbine and run it up to speed. This circuit is teed off the grid transformer/generator circuit-breaker (3A) connection and feeds the generator through a 3-position isolator (4) whose moving contact arm (4F) has one end pivoted at a point (4E) on the generator/main circuit-breaker connection. In normal operational service, the arm's free end is isolated (4B); during starting it connects (4A) with the by-pass circuit, the main circuit-breaker remaining open (3B). In the third position (4C) it applies an earth (4G) to the gearbox/main circuit-breaker connection to give safe maintenance access.
IPC 8 full level
H02B 1/24 (2006.01)
CPC (source: EP US)
H02B 1/24 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
FR 2771561 A1 19990528; FR 2771561 B1 20000128; BR 9805022 A 19991109; CA 2252062 A1 19990524; CA 2252062 C 20040120; EP 0924826 A1 19990623; EP 0924826 B1 20060726; ID 21559 A 19990624; KR 19990045534 A 19990625; US 6118257 A 20000912
DOCDB simple family (application)
FR 9714709 A 19971124; BR 9805022 A 19981123; CA 2252062 A 19981123; EP 98402928 A 19981125; ID 981523 A 19981124; KR 19980050505 A 19981124; US 19804898 A 19981123